VPRS - cost not updating with Subsequent Debit
We have an issue with the VPRS price in VF03 not updating if a subsequent debit is processed after initial vendor invoice and customer billing has been processed. (for third party processing)
There is no problem if a vendor invoice and subsequent debit is processed before customer billing. There is also no problem if if a vendor invoice and subsequent debit is processed after customer billing. There is only an issue when the vendor invoice is received first, then customer billing then subsequent debit applied.
Can someone describe how the VPRS on the billing document is updated in SAP? Any information on how to fix this would be greatly appreciated.